Interlocking nut engaging inserts for socket wrenches and box end wrenches



I April 4, 1950 2:? 9 6211A 'L. Fq/PPs g Q Q Mm Inventor Patented Apr.4, 1956 INTERLOCKING NUT ENGAGING INSERTS FOR SOCKET WRENCHES. AND BOXEND WRENCHES Celia L. Phipps, Waterloo, Ill.

Application July 20, 1946, SerialNo. 685,217

1 Claim.

This invention relates to improvements in interlocking socket and boxend type wrenches and inserts therefor.

An object of the invention is to provide an improved construction ofnested and interlocking nut engaging inserts for socket and box end typewrenches.

Another object of the invention is to provide an improved constructionof nested and interlocking nut engaging inserts for socket and box endtype wrenches which will be similarly formed with the exception that-theinserts for the socket type wrenches are closed at one end and formedwith square apertures therethrough for receiving and positioning thesquare shank of the handle operating member.

A further object of the invention is to provide a plurality ofconcentrically disposed nested nut engaging inserts for socket and boxend type wrenches which will interlock with each other and with saidwrenches.

Another object of the invention is to provide an improved constructionof nested and interlocking nut engaging inserts for socket and box endtype wrenches which will be highly eificient in operation, andrelatively inexpensive to manufacture and produce.

Other objects will appear as the description proceeds.

In the accompanying'drawings, which form a part of this application, I

Figure l is a plan View of a socket wrench;

Figure 2 is a vertical sectional view through a socket wrench withnested nut engaging inserts therein;

Figure 3 is a bottom plan view looking into the open or bottom end of asocket wrench with the inserts removed;

Figure 4 is a bottom plan view of the largest nut engaging insertadapted to be received in said socket wrench;

Figure 5 is a bottom plan View of the middlesize nut engaging insertadapted to be received within said larger nut engaging insert;

Figure 6 is a side elevation of the middle-size nut engaging insert;

Figure 7 is a bottom plan'view of the smallestsize nut engaging insertadapted to be received within said middle-size nut engaging insert;

Figure 8 is a sectional view taken on the line 8-8 of Figure 5; a

Figure 9 is a plan View of a double ended box and wrench with nutengaging inserts removed; and

Figure 10 is a sectional view through one end.

of the box and wrench.

Like characters of reference are used throughout the followingspecification and accompanying drawings to designate correspondingparts.

In carrying out the invention, there is provided a socket type wrenchhaving a cylindrical body I, the same being closed by the thickenedwall, 2 at its upper end, and formed with the square aperture 3 toreceive the largest square shank 4 on the end of the handle operator 5.A series of stepped square shanks 6, l and 8 will be formed integrallywith the square shank 4 and will be arranged in axial alignmenttherewith. As seen from Figure 2 of the drawings, the handle operator 5will be disposed at right angles to the said stepped shanks.

The inner annular surface of the wrench body I is formed with a seriesof alternate vertically arranged V-shaped recesses 9 and inwardlyextending ribs H]; while vertical locking slots II are formed inalternate ribs l 0.

A series of nut engaging inserts l2, l3 and M are provided and eachcomprises a vertical wall made with alternate inwardly and outwardlyextending ribs l5 and I6, which will be interlocked with the-recesses 9and ribs l0 formed in the wrench body I. Alternately arranged verticalinterlocking ribs I1 and slots F8 are formed on the outside and insidesurfaces of the inserts, whereby the inserts will interlock with theadjacent inserts. The smallest insert i l will be provided only with theribs H, the slots is being omitted for obvious reasons.

From the foregoing description it will be apparent that each insert willbe adapted to be used with varying sizes of nuts, either square orhexagonal in shape. Furthermore, each insert 8, 9 and ill will be closedat its upper end and will be formed with the square apertures or socketsI9, 20 and 2! respectively, in which the square shanks 6, I and 8 willbe received.

The inserts which are not to be used, as for example when the largestinsert only is to be used, may be knocked out with little or no efiort.

In Figures 9 and 10, a double box end type wrench is shown having acentrally disposed hantile 22 and the box ends 23 and 24 formed on theopp site ends thereof. Similar inner surface construction for the boxends will be provided as shown for the socket wrench I and similarnesting and interlocking inserts will be used except that the insertswill be cylindrical and open a both ends.

While the preferred embodiment of the instant 3 invention has beenillustrated and described, it will be understood that it is not intendedto limit the scope of the invention thereto, as many minor changes indetail of construction may be resorted to without departure from thespirit of the invention.

Having thus described my invention What I claim as new and desire tosecure by Letters Pattent of the United States is:

A wrench tool comprising a series of nested interlocking socket memberseach provided with an axial non-circular opening, which openings are ofdecreasing diameters, irregular interlocking ribs and grooves formedrespectively on the inner and outer surfaces of the socket members and ahandle actuator provided with a projecting end portion having a seriesof stepped axially aligned non-circular shank portions formed thereon,which shank portions are adapted to be inserted respectively in thecomplementary aligned openings of the socket members.

CELIA L. PI-IIPPS.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 608,866 Jones Aug. 9, 18981,185,679 Kalina June 6, 1916 1,270,263 Burnson June 25, 1918 1,346,061Rosenberg July 6, 1920 1,997,948 Pearson Apr. 16, 1935 2,322,856 Le RoueJune 29, 1943 2,337,368 Bohler Dec. 21, 1943 2,350,097 Conner May 30,1944

